Wind power gear box torsion arm pin shaft anti-drop structure

Abstract

The utility model relates to a wind power gear box torsion arm pin shaft anti -drop structure relates to wind power gear box technical field, it adopts wind power gear box torsion arm pin shaft anti -drop structure, can realize torsion arm pin shaft and gear box pin hole axial limit, thereby effectively improve torsion arm pin shaft when using the stability and prevent its drop pin, further guarantee the normal work and operation safety of wind power gear box, simultaneously effectively reduce each cost that wind power gear box failure brought about. In the wind power gear box torsion arm pin shaft anti -drop structure, torsion arm pin shaft has annular boss, gear box pin hole has annular groove with annular boss matching with annular boss position corresponding annular boss, and annular groove and annular boss interference assembly.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine gearbox technology, and in particular to a wind turbine gearbox torque arm pin anti-detachment structure, which is especially suitable for wind turbine three-point support gearboxes. Background Technology

[0002] Currently, the three-point supported gearbox is an important component of wind turbine generator sets. With the increasing power output of wind turbine generator sets, the load-bearing capacity requirements of wind turbine gearboxes are constantly rising, leading to more frequent cases of pin detachment.

[0003] When the wind turbine gearbox is working, the frame provides elastic support to both ends of the torque arm pin. However, due to the complex working conditions, the pin hole of the wind turbine gearbox may deform, causing relative displacement between the torque arm pin and the gearbox pin hole. This results in the torque arm pin moving around, which can render the wind turbine gearbox unusable, posing significant operational and economic risks.

[0004] The increasing power output of wind turbine generators places higher demands on the safety and performance of wind turbine gearboxes. Therefore, eliminating the axial movement of the torque arm pin and ensuring the normal operation and safety of the wind turbine gearbox has become a crucial technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a wind turbine gearbox torque arm pin anti-detachment structure. It adopts a wind turbine gearbox torque arm pin anti-detachment structure, which can realize the axial limit between the torque arm pin and the gearbox pin hole, thereby effectively improving the stability of the torque arm pin during use and preventing it from falling off the pin, thus ensuring the normal operation and safety of the wind turbine gearbox, while effectively reducing the various costs caused by the failure of the wind turbine gearbox.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A wind turbine gearbox torque arm pin anti-detachment structure includes: a torque arm pin and a gearbox pin hole; the torque arm pin has an annular boss, and the gearbox pin hole has an annular groove corresponding to the position of the annular boss, which matches the annular boss, and the annular groove is interference-fitted with the annular boss.

[0007] Optionally, the annular boss is a rectangular boss, and the annular groove is a rectangular groove.

[0008] Optionally, the annular boss is a spherical boss, and the annular groove is a spherical groove.

[0009] Optionally, the annular boss is a U-shaped boss, and the annular groove is a U-shaped groove.

[0010] Optionally, the annular boss is a semi-circular boss, and the annular groove is a semi-circular groove.

[0011] Optionally, the annular boss is a spherical boss, and the annular groove is a rectangular groove.

[0012] In practical applications, the annular boss shall include at least one.

[0013] Compared with the prior art, the wind turbine gearbox torque arm pin anti-detachment structure of this utility model has the following advantages: In the anti-loosening structure of the torsion arm pin of the wind turbine gearbox provided by this utility model, when the gearbox is working, it is subjected to alternating working condition load. The gearbox pin hole is subjected to a flipping torque. Under the combined action of the elastic support of the frame and the flipping torque on the gearbox pin hole, the torsion arm pin is interference-fitted into the gearbox pin hole. Since the annular boss of the torsion arm pin and the annular groove of the gearbox pin hole provide axial limit, angular displacement cannot occur, thus effectively achieving the limit and having an anti-loosening function. Attached Figure Description

[0014] Figure 1 A schematic diagram of the anti-detachment structure of the torsion arm pin of the wind turbine gearbox provided in this embodiment of the utility model; Figure 2 A schematic diagram of the first partial structure of the annular groove and annular boss in the anti-detachment structure of the wind turbine gearbox torque arm pin provided in this embodiment of the utility model. Figure 3 This is a schematic diagram of a second partial structure of the annular groove and annular boss in the anti-detachment structure of the wind turbine gearbox torque arm pin provided in an embodiment of the present utility model. Figure 4 A schematic diagram of the third partial structure of the annular groove and annular boss in the anti-detachment structure of the wind turbine gearbox torque arm pin provided in this embodiment of the utility model. Figure 5 A schematic diagram of the fourth partial structure of the annular groove and annular boss in the anti-detachment structure of the wind turbine gearbox torque arm pin provided in this embodiment of the utility model. Figure 6 This is a schematic diagram of the fifth partial structure of the annular groove and annular boss in the anti-detachment structure of the torsion arm pin of the wind turbine gearbox provided in this embodiment of the utility model.

[0015] Figure label: 1-Torque arm pin; 11-Annular boss; 2-Gearbox pin hole; 21-Annular groove. Detailed Implementation

[0016] For ease of understanding, the anti-detachment structure of the wind turbine gearbox torque arm pin provided in the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] This utility model embodiment provides a wind turbine gearbox torque arm pin anti-detachment structure, such as... Figures 1-6 As shown, it includes: a torque arm pin 1 and a gearbox pin hole 2; the torque arm pin 1 has an annular boss 11, and the gearbox pin hole 2 has an annular groove 21 that matches the annular boss 11 at the position corresponding to the annular boss 11, and the annular groove 21 and the annular boss 11 are interference-fitted.

[0018] Compared with the prior art, the wind turbine gearbox torque arm pin anti-detachment structure described in this embodiment of the invention has the following advantages: In the anti-loosening structure of the wind turbine gearbox torque arm pin provided in this embodiment, when the gearbox is working, it is subjected to alternating working condition load. The gearbox pin hole 2 is subjected to a flipping torque, and the torque arm pin 1 is interference-fitted into the gearbox pin hole 2 under the combined action of the elastic support of the frame and the flipping torque subjected to the gearbox pin hole 2. Since the annular boss 11 of the torque arm pin 1 and the annular groove 21 of the gearbox pin hole 2 provide axial limit, angular displacement cannot occur, thereby effectively achieving the limit and having an anti-loosening function.

[0019] Optionally, such as Figure 2 As shown, the annular boss 11 can be a rectangular boss, and the annular groove 21 can be a rectangular groove.

[0020] Optionally, such as Figure 3 As shown, the annular boss 11 can be a spherical boss, and the annular groove 21 can be a spherical groove.

[0021] Optionally, such as Figure 4 As shown, the annular boss 11 can be a U-shaped boss, and the annular groove 21 can be a U-shaped groove.

[0022] Optionally, such as Figure 5 As shown, the annular boss 11 can be a semi-circular boss, and the annular groove 21 can be a semi-circular groove.

[0023] Optionally, such as Figure 6 As shown, the annular boss 11 can be a spherical boss, and the annular groove 21 can be a rectangular groove.

[0024] It should be further noted that the annular boss 11 of the aforementioned torque arm pin 1 may include, but is not limited to, any one or more combinations of rectangular bosses, spherical bosses, U-shaped bosses, semi-circular bosses, and irregular bosses, and the number of each type of boss may be one or more; correspondingly, the annular groove 21 of the aforementioned gearbox pin hole 2 may include, but is not limited to, any one or more combinations of rectangular grooves, spherical grooves, U-shaped grooves, semi-circular grooves, and irregular grooves, and the number of each type of groove may be one or more.

[0025] In practical applications, such as Figures 1-6 As shown, the above-mentioned annular boss 11 includes at least one, that is, the number of annular bosses 11 can be one or more; correspondingly, the number of annular grooves 21 can be the same as the number of annular bosses 11.

[0026] During assembly, the gearbox pin hole 2 can be heat-fitted and the torque arm pin 1 can be cold-fitted. After the torque arm pin 1 and the gearbox pin hole 2 are assembled in place, the assembly is restored to room temperature. The annular boss 11 on the torque arm pin 1 and the annular groove 21 on the gearbox pin hole 2 are axially limited, thereby effectively improving the stability of the torque arm pin 1 during use and thus effectively preventing the torque arm pin 1 from falling off.

[0027] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A structure for preventing the torsion arm pin of a wind turbine gearbox from detaching, characterized in that, include: Torque arm pin and gearbox pin hole; The torque arm pin has an annular boss, and the gearbox pin hole has an annular groove that matches the annular boss at the corresponding position, and the annular groove and the annular boss are interference-fitted.

2. The anti-detachment structure for the torsion arm pin of the wind turbine gearbox according to claim 1, characterized in that, The annular boss is a rectangular boss, and the annular groove is a rectangular groove.

3. The anti-detachment structure for the torsion arm pin of the wind turbine gearbox according to claim 1, characterized in that, The annular boss is a spherical boss, and the annular groove is a spherical groove.

4. The anti-detachment structure for the torsion arm pin of the wind turbine gearbox according to claim 1, characterized in that, The annular boss is a U-shaped boss, and the annular groove is a U-shaped groove.

5. The anti-detachment structure for the torsion arm pin of the wind turbine gearbox according to claim 1, characterized in that, The annular boss is a semi-circular boss, and the annular groove is a semi-circular groove.

6. The anti-detachment structure for the torsion arm pin of the wind turbine gearbox according to claim 1, characterized in that, The annular boss is a spherical boss, and the annular groove is a rectangular groove.

7. The anti-detachment structure for the torsion arm pin of the wind turbine gearbox according to any one of claims 1-6, characterized in that, The annular boss includes at least one.

Images